Water-tube boiler.



F Wl GUBERT.

WATER TUBE BOILEH.

APPLICATION FILED JULY H. 1914.

1,l68,880. Patented 5311.18, 1916.

'SA/)11155555 A INVEHTGR FTW Uhl @Wehe PATENT @lillllfGEa F WALTER (winner, or nnrnoir, Miei-Ireen.

'WATER-TUBE BOILEB.

Application filed July ll, 1914:.

To all fui/tom, it may concern Be it known that l. F WALTER GUIBERT, citizen of the United States, residing at Detroit. county of Wayne, State of Michi- `ejan, have invented a certain new and useful Improvement in lVater-Tube Boilers, and declare the 'following to be a iiulla clear, and exact description of the saine, such as will enable others skilled in the art to which it pertains to inake and use the saine, reference being had to the accompanying drawings7 which torni a part ot' this specification.

This invention relates to water tube boilers and consists of an arrangement of the tubes to effect a uniform heatingof the water or" the lower druni. lin ordin aryT water tube boilers the water near the bottoni oit the lower druni is relativelt7 cold. My invention obviatesthat condition.

In the drawings: The ligure is a vertical cross-section of a furnace and a water tube boiler.

au@ are tubes connecting the lower drinn Z with the upper drum o.

CZ is a furnace provided with a fire pit e and a combustion chamber ln the latter are located the tubes and the drums. Those tubes, or seine of them, nearest the fire are extended down through the shell of the druin and into the interior to varying depths. The inouths of these extensions are bell-shaped so as not onlyT to assist circula,- tion but also to prevent the lifting of mud,

sludge7 etc. These. extended tubes are terinil nated at different depths so as to draw water Ltroni all levels in the lower drum.k lt preferable to extend the tubes into the interior of the drum from the top and sides instead oi attaching them lower down on the sides and at the bottoni, although siniilar but less effective results can be accomplished by so attaching the'm.

Patented Jan. i8, i916.

Serial No. 850,373.

I am aware that tubes' have heretofore been extended into the lower druin ot' a water tube boiler but for a dii'iierent purpose. The tubes so ent-ended have been used for and adapted only for down low of the water.

lnasniueh ask the tubes that reach theA lowest parte ot the lower drum are nearest y 'the burningg fuel they are in the hottest Zone and consequently the water will rise in these and the;7 are the 11p-going tubes.

lVhat l claim is l. A water tube boiler, haring in coinbination. an upper and a lower drum, and tubes connecting the two drums, a number oit the rip-going tubes protruding into the interior of the lower druni haring their niouths in the lower parts of the lower drum.

2. n water tube boiler, having in combinationi an upper drinn, a lower drum, and tubes connecting the two druins, a number of the rlp-going tubes protruding into the interior of the lower drum having their inouths located at diiierent levels in the lower drinn troni the bottoni upward.

The combination with a furnace provided u'ith zones oi greater and less heat, et a water tube boiler comprising., an upper drinn, a lower drinn, and tubes connecting the drinn? several. of the tubes located in the Zone ot greater heat protruding into the interior oii the lower drum having their inouths in the lower portions ot the lower drinn.

,ln testiinoniT whereof', l sign this specification in the presence of two witnesses.

l. vWnLTER GUBERT.

lVitnesses:

nnninrrn E. RUDD, STUART C. BARNES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washngton,1). C. 

